Amanda is the owner of a small chain of dental offices. She sent out the yearly satisfaction survey to 600 randomly selected patients and received 544 surveys back. When looking through the results, she noticed that the downtown dental office staff had 84% of clients reporting satisfaction with services, while the uptown dental office staff had 76% of clients reporting satisfaction with services.  Which of the following sets shows Amanda's null hypothesis and alternative hypothesis?Null Hypothesis: The proportion of clients satisfied at the downtown office is equal to the proportion of clients satisfied at the uptown office. Alternative Hypothesis: There is a difference in the satisfaction between the uptown and the downtown clients. Null Hypothesis: The proportion of clients satisfied at the downtown office is greater than the proportion of clients satisfied at the uptown office.Alternative Hypothesis: Downtown clients are less satisfied with the dental office staff than uptown clients.Null Hypothesis: The proportion of clients satisfied at the uptown office is 76%.Alternative Hypothesis: There is no difference in the satisfaction between the uptown and the downtown clients.Null Hypothesis: The proportion of clients satisfied at the downtown office is 84%.Alternative Hypothesis: Uptown clients are more satisfied with the dental office staff than downtown clients.

The manager of a mall conducted a survey among two groups (n1 = 100, n2 = 100) of visitors to the mall on different days. She found that the first group spent an average of 60 minutes in the mall, while the second group spent an average of 90 minutes in the mall.If the manager wishes to see the difference in the average times spent by the two groups in the mall, which of the following sets shows the null hypothesis and alternative hypothesis?Null Hypothesis: There is at least some difference in the average times spent by the two groups in the mall.Alternative Hypothesis: The difference in the average times spent by the two groups in the mall is 30 minutes.Null Hypothesis: There is no difference in the average times spent by the two groups in the mall.Alternative Hypothesis: There is at least some difference in the average times spent by the two groups in the mall.Null Hypothesis: There is at least some difference in the average times spent by the two groups in the mall.Alternative Hypothesis: There is no difference in the average times spent by the two groups in the mall.Null Hypothesis: There is no difference in the average times spent by the two groups in the mall.Alternative Hypothesis: There is a difference in the average times spent by the two groups in the mall, with a standard deviation of 30 minutes.

If a school administrator claims that less than 50% of the students are dissatisfied with the food served in the school canteen. The claim used a sample data obtained from a survey of 500 students of the school wherein 54% indicated their dissatisfaction with the food served in the school canteen. Which of the following is the appropriate alternative hypothesis?p= 0.50p < 0.50p > 0.50p ≠ 0.50

Question 111 Point   Using table 1 from a previous question, what is the probability of selecting a female or married person?295/30050/300none of the above245/300Question 121 PointWhat is the Hypothesis Test of Proportion where the claim for a marketing campaign is that 0.65 clients respond, and you want to prove it is less. Your survey of 116 clients showed 80 respond. Test the hypothesis at a 5 % level of significance.What is the test statistic?1.640.6897.8954I scream whenever a great white shark attacks me, sometimes I scream in statisics exams, but mostly I scream when seaweed touches my foot.Question 131 PointWhat is the Confidence Interval for a random sample of 86, mean of 92, standard deviation of 17.48, and confidence of 0.82 ? Provide the UPPER confidence interval only. Format to 1 decimal places.Integer, decimal, or E notation allowedQuestion 141 Point  Table 1 : An insurance company has collected the following data on the gender and marital status of 300 customers.     Marital Status Gender Single Married Divorced Male 25 125 30 Female 50 50 20  What is the probability of selecting a male?150/300125/180none of the above150/18025/80Question 151 PointRegression StatisticsMulitple R -0.885923R Square   0.769832                 CoefficientsIntercept     9.0000Socks        -0.5000Given the above data, pick the best description below for the "coefficient of correlation".It is a good model where the independent variable, Socks, explains 76.9% of the dependent variable.It is negative, and indicates a strong direct relationship between variablesIt is positive, and a strong correlation between variablesIt is a positive model, and 76.9% of the dependent variable Socks is explained by the independent Y variable.Question 161 PointFor a Hypothesis Test of Proportion, the claim for a marketing campaign is that 0.65 clients respond, and you want to prove it is less. Your survey of 116 clients showed 80 respond. Test the hypothesis at a 5 % level of significance.For this question, what are the number of tails for this test?No tails.A bus station is where a bus stops, a train station is where a train stops, and I have a work station. Need I say more?2 tail1 tailQuestion 171 PointIn a binomial experiment using a sample of 30, you find the probability of getting pancreatic cancer if you drink more than 2 cokes a week is 0.2 . What is the expected value?.9558None of the above.98946Question 181 PointIf your mean is 1000, and your standard deviation is 50, then according to the empirical rule, the interval for 95% of the data would be1.00850 to 1150950 to 1050900 to 1100Question 191 PointMulitple R 0.32923 R Square   0.50832                  Coefficients Intercept     99.0000 Heels           -7.5000 Given the above data, what is the regression equation?y = 99 + 7.5(Heels)y = 99 - 7.5(Heels)r 2 = .508y = -7.5 + 99(Heels)Question 201 PointWhat is the probability of selecting a student AND a cat? Format to 2 decimal places. Cat Dog Totals Student 25 28 53 Professor 24 19 43 Totals 49 47 96 Integer, decimal, or E notation allowedQuestion 211 PointGiven you are male, what is the probability you have an Old product? Use 2 decimal places.   New product Old product Totals Male 26 14 40 Female 17 27 44 Totals 43 41 84 Integer, decimal, or E notation allowedQuestion 221 Point Mulitple R 0.32923 R Square   0.50832                  Coefficients Intercept     99.0000 Heels           -7.5000 Given the above regression equation on the discounted cost of high heels in pairs, if someone bought 2 high heels in pairs, what would they spend? (Provide your answer as a whole number).Integer, decimal, or E notation allowedQuestion 231 PointCalculate in a Normal Distribution Probability the probability of X being more than 258.84 with a mean of 293 and standard deviation of 32.23?  Use 3 decimal points.Integer, decimal, or E notation allowedQuestion 241 PointCalculate the Discrete Variance using these numbers: x = 0 P(X = x)= 0.12 x = 1 P(X = x)= 0.13 x = 2 P(X = x)= 0.04 x = 3 P(X = x)= 0.71 Format to 2 decimals. Integer, decimal, or E notation allowedQuestion 251 PointWhat is the Sample Size if the standard deviation is 8.8, error is within 2.99, and confidence level is 0.87 ?1004.456Take life with a grain of salt, then add a slice of lemon, and a shot of tequila.20

Suppose that a major polling organization wanted to test the hypothesis that there was a change in the president’s “approval rating” since last month. Last month, 35% of the representative sample of registered voters approved of the president. For this month, the null hypothesis was that the approval rating equals 35% and the alternative hypothesis is that the approval rating does not equal 35%. The significance level for this test was 0.05.The results of the hypothesis test of the new survey showed a p-value of 0.008.Which of the following statements is correct? Check all that apply. The results were statistically significant. The results were not statistically significant. The null hypothesis should be rejected. The null hypothesis should be accepted. The null hypothesis cannot be rejected.

Kids with phones: A marketing manager for a phone company claims that the percentage of children aged 8-12 who have phones differs from 60%. In a survey of 824 children aged 8-12 by a national consumers group, 453 of them had phones. Can you conclude that the manager's claim is true? Use the =α0.05 level of significance and the P-value method with the TI-84 Plus calculator.Part: 0 / 50 of 5 Parts CompletePart 1 of 5State the appropriate null and alternate hypotheses.:H0 :H1 This hypothesis test is a ▼(Choose one) test.